package cn.itcast.bos.service.base.impl;

import java.util.List;
import java.util.Set;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import cn.itcast.bos.dao.base.CourierDao;
import cn.itcast.bos.domain.base.Courier;
import cn.itcast.bos.domain.base.FixedArea;
import cn.itcast.bos.service.base.CourierService;

@Service
@Transactional
public class CourierServiceImpl implements CourierService {
	
	@Autowired
	private CourierDao courierDao;
	
	@Override
	public void save(Courier courier) {
		courierDao.save(courier);
	}

	@Override
	public Page<Courier> findPageData(Specification<Courier> specification,
			Pageable pageable) {
		
		Page<Courier> findAll = courierDao.findAll(specification,pageable);
		
		return findAll;
	}

	@Override
	public void courierDel(String[] strings) {
		for (String string : strings) {
			int id = Integer.parseInt(string);
			courierDao.courierDel(id);
		}
		
	}

	@Override
	public void courierRes(String[] strings) {
		for (String string : strings) {
			int id = Integer.parseInt(string);
			courierDao.courierRes(id);
		}
		
	}

	@Override
	public List<Courier> getCourier() {
		
		Specification<Courier> specification = new Specification<Courier>() {

			@Override
			public Predicate toPredicate(Root<Courier> root,
					CriteriaQuery<?> query, CriteriaBuilder cb) {
				
				Predicate p = cb.isEmpty(root.get("fixedAreas").as(Set.class));
				
				return p;
			}
		};
		
		return courierDao.findAll(specification);
	}
}
